push: fix docsstring
Seems the code block misses `::`. This patch makes sure `[push]` and
`pushvars.server = true` are in two lines.
Differential Revision: https://phab.mercurial-scm.org/D411
--- a/mercurial/commands.py Wed Aug 16 13:54:24 2017 +0900
+++ b/mercurial/commands.py Tue Aug 15 17:22:57 2017 -0700
@@ -4022,7 +4022,7 @@
strings that look like conflict markers.
By default, servers will ignore `--pushvars`. To enable it add the
- following to your configuration file
+ following to your configuration file::
[push]
pushvars.server = true